The upright orientation is also the first step in surface detachment for bacteria.

这种直立的方位也是细菌脱离组织表面的第一步。

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On the surface, one could get the impression that a use case transaction just is a system step.

表面上，我们可能会得出用例事务只是一个系统步骤。

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Six-and-a-half hours later, he stepped onto the powdery surface with the words, "That's one small step for man, one giant leap for mankind."

6个半小时之后，他行走在粉状的月球表面，并说：“这是我们的一小步，却是人类的一大步。”

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In making the move from the Surface RT to the Surface Pro, we step up from 1, 366 x 768 resolution to 1080p.

ENGADGET: Microsoft Surface Pro hands-on Hands-on

Making a faux marble surface is a four-step process.

WSJ: An Artisan Who Can Turn Paint into Stone | Creating

The next astronauts to step out onto the dusty gray surface of the moon will be wearing a suit that's very different from the bulky white armor worn by the Apollo explorers.

NPR: NASA's Future Spacesuits Are Made for Walking